Datrys {l}{{(frac{2*{(3)}+2}{3})}x-5*1=3}{y=7}{z=y}{a=z}{text{Solvefor}btext{where}}{b=a}

$$\left. \begin{array} { l } { {(\frac{2 \cdot {(3)} + 2}{3})} x - 5 \cdot 1 = 3 }\\ { y = 7 }\\ { z = y }\\ { a = z }\\ { \text{Solve for } b \text{ where} } \\ { b = a } \end{array} \right.$$

Datrys ar gyfer x, y, z, a, b

$$b=7$$

Camau Ateb

Ystyriwch yr hafaliad cyntaf. Lluoswch ddwy ochr yr hafaliad â 3.

$$\left(2\times 3+2\right)x-15\times 1=9$$

Lluosi 2 a 3 i gael 6.

$$\left(6+2\right)x-15\times 1=9$$

Adio 6 a 2 i gael 8.

$$8x-15\times 1=9$$

Lluosi 15 a 1 i gael 15.

$$8x-15=9$$

Ychwanegu 15 at y ddwy ochr.

$$8x=9+15$$

Adio 9 a 15 i gael 24.

$$8x=24$$

Rhannu’r ddwy ochr â 8.

$$x=\frac{24}{8}$$

Rhannu 24 â 8 i gael 3.

$$x=3$$

Mae’r system wedi’i datrys nawr.

$$x=3 y=7 z=7 a=7 b=7$$